Tractor



Unox Haq N. A. KENNEDY.

TRACTOR. l

, Patented Oct. 19,1920.

5 SHEETS-SHEET l.

V APP'LICATION FILED DEC. 20, 1917. 1,356,070.

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TRACTOR.

APPLICATION FILED DEc.20.1911.

Patented Oct. 19, 1920.

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TRACTOR.

APPLICATION FILED nic. 20, 1917.

1 ,356,070. Patented Oct. 19, 1920.

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I Inventor Attorney N. A. KENNEDY.

TRACTOR.

5 SHEETS-*SHEET 4.

Clitunno? N. lA. KENNEDY.

TRACTOR. v APPLICATION EILED DECvl 20| I9I7.

Patented o@t.19,1920.

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NNQNMW UNITED STATES PATENT OFFICE.-

NOAHilA'. KENNEDY. OF CANDO, NORTH? DAKOTA.

TRACTOR.

Application filed, December 20, 1917.

intended for drawing farming implements and the like, and contemplates atractory of the two wheel type.

One of the main objects of theV invention is to provide a tractor` whichmay be geared to the usual low speeds when pulling a load, and may beshifted to a variety of speeds when traveling without a load or with alight load.

The invention also contemplates providing means for converting thetractor into a three wheel tractorV for the purpose ofallowing thedevice to be easily backed when necessary. This is of` particularadvantage when plowing, especially at fencey corners, wlfiere aconsiderable space must usually be le t.

The invention also contemplates the provision of suitable control leverswhich will always be in reach of the operator. Y

A further object of the invention is the provision of a simple, durable,and eicient tractor.

With the foregoing andother objects in view which will appear as thedescription proceeds, the invention consists in the novel arrangementandv construction ofvv parts hereinafter pointed out and claimed in theclaims, it being understood` that' such changes in the structuralarrangement and combination` ofy parts may be made as fall withinv thespirit of theinvention and the scope of. thevclaims. y

A practical embodiment of the invention is shown in the accompanyingdrawings, wherein Figure 1 is a plan view of a tractor constructed inaccordance with the invention, with the hood and other housings removed,andl portions broken away;

Fig. 2 is a side elevation of the same;

Fig. 3 is a fragmentary detail in side elevation of the clutch lever; l

Fig. 4 is a section. on the line /1-4 of Fig. 3;,

Specification ofLet-ters Patent:

Patented Oct. 19; 1920;

Serial No. 208,055.

Fig. 5 is a view in perspective of thev lever crank;

Fig.. 6 is a detail' fragmentary view in side elevation of the crank forthrowing. the driving friction disk;

Fig. 7 is a side elevation of the cam for throwing, the reverse motionbeveled gears;

Fig. 8 is a fragmentary sectional'view on the line 8 8 ofv F ig. 7;

Fig. 9 is a fragmentary view in side elevation of the throttle controlconnection;

Fig.. 10 is asection on the line 10-10 of Fig. 11 is a fragmentary viewin side elevation of the thirdvwheel attachment;

F ig, 12 is a sectional view on the line 12-12 of Fig. 1,1, portionsbroken away;

Fig. 13 is a. fragmentary plan view of the third wheel platformmounting;

Fig. 14 is` afragmentary detail inside elevation of the guide wheel'attachment;

Fim 15 is a similar view in end elevation, partly in section; Y

Fig..16 is a front elevation,.partly in section, of4 the hitch Fig. 17is` a cross section ofI one of the hitclLhars. i

Referring tothe drawings by numerals `of reference:

In carrying out the invention there is provided a substantiallyrectangular oblong.

frame or chassis 1 which is supported on av horizontally disposed,transverse aXle 2 on the protruding spindles of which turn the wheels 3.

Bedded on the frame or chassis 1 is a motor 4, of any preferred type,but herein shown as an internal combustion. engine. The usual'y clutchhousing y5 is secured at the rear ofthe motor, and; adjacent thishousing and to the rear thereof is a universal joint 6 which connectsthe drive shaft. 7 to the clutch shaft.v

The drive Shaft 7 extends lengaudinauy of the tractor chassis and hasrigid thereon the change speed gears 8L Upon the rearward; end of theshaft 7 is feathered a fric tion disk 10 which has a groovedneck 11`engaged'by the yoke end of a rod 12, by which the disk is thrown tobring it into or throw it out of gear. A compression spring 13 surroundsthe shaft 7 and is confined between the neck 11 and. a collar letv whichisl secured on the shaft 7 and serves to force A shaft 15 extendstransversely of thel tractor chassis and is journaled in boxes 16suitably secured on the side bars of the chassis. A hanged frictionwheel 1T is feathered on the shaft 15 and has an eX- tended hub 18 fromwhich extend pins bearing rollers 19 which contact opposed faces of acam 2O for the purpose of sliding the disk on the shaft and changing itsposition on the face of the friction disk with which it is adapted tocontact and by which it is driven. @ne end of the shaft eX- tends beyondits side bar of the chassis and on this end is secured a fly wheel 21,while within the chassis, and near the other end of the shaft 15, aspur-gear 22 is feathered on the shaft.

A lever 23 is fulcrumed on the chassis 1 and is operable to throw thespurgear 22 in and out of mesh with a differential gear 24 interposedbetween the abutting ends of alining shafts 25 which are ournaled in thechassis and extend transversely thereto. Upon the laterally extendingend of each shaft 25 is secured a pinion 26 which is adapted to meshwith an internal gear 27 formed in each tractor wheel 3.

A countershaft 28 extends for a short distance longitudinally of thechassis and is journaled in suitable supports 29 which eX- tend inwardlyfrom one side bar of the chassis to which they are secured. Feathered onthe forward end of this shaft are the change speed gears 8O which areadapted to be thrown to alternately engage the change speed gears 8.Rigid on the rear end of this counter shaft is a beveled pinion 81 whichis adapted to alternately mesh with the beveled gears 82 which areintegral on the hub 88, which hub is feathered on the shaft 15. Thesegears are used for driving the tractor when heavy pulling is desired andserve to reverse the direction of motion of the tractor when the samebecomes necessary.

To the rear end of the tractor chassis is secured by bolts or otherwisea semicircular rack 34 which is embraced or straddled b v the yoke end35 of a rearwardly extending` bar 86. l. housing or boxing` 87 is formedon the rear transverse bar of the chassis 1 and the ends of the yoke 35rest on the ends of this housing, being pivotally secured thereto by aking-bolt 88 or otherwise.

The enlarged portion of the bar 36, adjoining the yoke 85, is cored toreceive a vertically disposed shaft 89 on which is slidably mounted apinion adapted to mesh with the rack 34. A beveled gear 41 is rigidlysecured to the upper end of the shaft 39 and meshes with a beveledpinion 42 which is rigid on one end of steering post on the other end ofwhich is the steering wheel 44. Standards 45 are secured to and risefrom the bar 36 and form a journaling means for the steering post 43. Aseat 46 may be bolted or otherwise secured to the rear end of the bar36.

As it is often desirable that the operator may be seated on the binderor harvester, or other trailer being drawn by the tractor, the steeringpost may be telescopic or an eXtension rod may be secured thereto topermit the steering wheel to be placed within reach of the operator.Under such circumstances extension rods would also be clamped to any ofthe control levers desired. As this forms no part of the presentinvention and may be carried out by any usual and well known means,specific structure therefor has not been shown.

As the tractor is of the two wheel type in which the main body orchassis of the tractor swings with relation to the operators seat andthe steering wheel, when the tractor is turned or guided, it becomesnecessary to provide means for keeping the control levers within reachof the operator at all times. To this end the levers and theirmount-ings now to be described have been devised.

rEhe levers are all pivctally mounted, the axis of each pivoting pinlying in the vertical plane of the axis of the king bolt 38 which planeentends transversely of the tractor.

The clutch crank or stem is seen at 47, Fig. 1, and is connected by arod or link 48 to one arm of a bell-crank 49 (see JFigs. 3, 4, and 5)lwhich is fulcrumed in the forked upper end of a standard 50 which isbolted or otherwise secured to the rear bar of the chassis 1. Thebell-crank 49 is provided with series of depressions 51 which areadapted to receive the tapered end of a pawl or click 52 which works inthe bore of a block 58 supported on the standard 50. A compressionspring 54 actuates the click and this spring is held in place by thesmall screw plug 55 which is threaded into the bore of the block. Alever arm 56 is pivotally secured to the bell-crank 49, as seen mostclearly in Fig. 3.

The lever 57. which controls the driving friction disk 10, is similar tothat just described and is pivoted to a bell-crank 58 f which is mountedafter the manner of the bell-crank 49. The bell-crank 58 is pivotallyconnected. to the rod 12 which engages a yoke having engagement with thegrooved collar 11 of the friction disklO.

similar lever 59, pivoted to a bellcrank 60, which bell-crank isconnected by a link 61 tothe change speed gears 30, is operable to throwthe gears. 'y

For dhe purpose of throwing the reverse motion gears 82, a similar lever62 is provided which has pivotal connection with a belhcrank 68. he armof the bell-crank 63 terminates in an arcuate cam strip 64 which isengaged between rollers mounted on ins secured in the hub 33 of thegears 32.

y throwing the lever 62 the cam strip is reciprocated between therollers reciprocating the gears along the shaft 15, as seen most clearlyin Fig. 8. Y

A similar lever 66 is provided for reciprocating the friction disk 17and its bell-crank has a cam strip 20 which works between the rollers 19turning on pins secured in the hub of the disk 17.

These levers are constrained to oscillate about their pivots by ahorizontally disposed bar 67 which is pivotally secured to the bar 36and from which rise pins 68 beH tween which the levers work.

For the purpose of operating the throttle lever 69, a small hand lever70 is pivotally mounted on the upper end of the rearmost standard 45 andis connected by a link 71 to one arm of a bell-crank lever 72 which isfulcrumed on a support 73 secured to the yoke 35. Referring moreparticularly to Figs. 9 and 10, the other arm of the bellcrank 72engages the groove of a spool 74 which is slidable on a spindle 75 whichrises from or is an extension of the kingbolt 38. An arm of anotherbell-crank 76 also engages the groove of the spool 74 and thisbell-crank is mounted on the opposed side of the spindle from thebell-crank 72 and is fulcrumed on a support 77 which rises from the rearbar of the chassis 1. The other arm of the bellecrank 76 is connected bya link or connecting rod 7 8 with the throttle lever 69.

W hen the tractor is 'used for plowing it is desirable to convert itinto a three wheel tractor so that it may be properly backed to get intofence 'corners and the like. For this purpose a three sided frame 79,see Figs. 11, 12, and 13, is provided which is bolted or otherwiseattached to the rear ends of the side bars of the chassis 1 and the rearbar of this frame is curved to form an are of a circle whose center liesin the axis of the king-bolt 38. A complemental curved bar 80 extendstransversely of the frame 79 to which it is bolted or otherwise securedand this bar is suitably spaced from the rear bar of the frame.

Slidable in the channel of the rear bar and its complemental bar 80 isan H casting the ends of the legs of which have bent extensions 81adapted to partially embrace the rear bar and the bar 80. The cross barof the H has an enlarged central portion 82 which is cored to form ajournaling box for the spindle 83 which rises from the center of acircular platform 84 which platform is suspended just below the rear barof the frame and its complemental bar 80. A projection 85 extendsrearwardly of and radially from the boxing 82 and in this proj ectionturns a shaft on which is rigidly mounted a pinion 86. The shaft mayterminate at its extending end in a crank or handle 87 by which theshaft is manually rotated. rl`he pinion 86 meshes with a rack 88 whichis secured on the rear bar of the frame 79 and by rotating the shaft andpinion 86 the H and the platform 84 are swung in an arc to adjust theirposition transversely of the tractor.

Secured to the plat-form 84 in any suitable manner and dependingtherefrom is a fork or yoke 89 the arms of which are bifurcated toreceive the sliding journal boxes 90 in which turns the axle of a wheel91. Compression springs 92 may be placed in thebifurcated portion of theyoke arms and bear downwardly on the boxes 90 to retain the wheel in itsproper lowermost position.

As will be understood, the shifting of the H and platform 84 shifts thewheelv 91 for the purpose of having the wheel in position to track inthe furrow of the rearmost plow 93.

The plow standards 94 are hitched to the chassis of the tractor,preferably to the front bar thereof, in any usual and well known manner,and the plows may be raised and lowered by levers 95 or otherwise.

For the purpose of making the third wheel 91 a steering wheel, theplatform 84 is in the form of a chain wheel which is geared through achain 96 to a wheel or pulley 97 fast on the lower extending end of theshaft 39. While the connecting member 96 has been described and shown asa chain, it is to be understood that a cable or other flexible connectormay be used if desired.

For the purpose of providing a guide wheel which will run in the furrowand indicate the proper position of the tractor, an extension 98, seeFigs. 14 and 15, is threaded on the right-hand wheel spindle of axle 2and this extension merges into a vertically disposed channel head 99 inwhich is slidably mounted for vertical movement a bar 100 in the lowerend of which bar is secured a pin on which turns the guide wheel 101.The bar and wheel may be raised or lowered by a bell-crank lever 102 onearm of which is pivotally connected to the top of the bar 100 while theother arm is connected by a rod 103 to a suitably supported operatinglever 104.

For the purposeof providing` a hitch which will clamp the tongue of aharvester, wagon, or other trailer being drawn by the tractor, dovetailbars 105 are riveted or otherwise secured to each side of the beamV 36,from which they depend and on these bars slide extension bars 106 whichhave longitudinal dovetail slots in which the bars 105 have a slidingfit. Bolts 107 pass through apertures in the extensions 106 and serve toclamp them on each side of a tongue 108. Set screws 109 are threadedthrough the extensions 106 and serve to clamp the extensions in adjustedpositions on the bars 105.

Should the tractor be run by steam power or other equally flexiblemotor, the necessity for the friction drive herein shown would, ofcourse be removed.

The tractor is started and run rin the usual manner and the steering isaccomplished as is usual on two wheel tractors using steering gear ofthis type.

Vhen plowing or performing other heavy labor, the gears 32 are shiftedto bring one 0r the other, depending on the direction of motion desired,into gear with the pinion 31. This drives the shaft 15 and, through thedifferential 241, the shafts 25. Rotation of the shafts rotates thepinions 26 which impart rotary motion to the wheels 3. During thisoperation the friction disk 10 is thrown out of contact with thefriction wheel 17.

When the tractor is being moved from place to place or drawing a lightload and it is desired to secure greater speed than is possible with thegearing just described, the gears 32 are thrown out of gear with thepinion 31 and the friction disk thrown in contact with the frictionwheel 17 By shifting the friction-wheel 17 across the face of thefriction disk 10 a variety of speeds may be obtained and, by shiftingthe wheel 17 to one side or the other of the center of the friction disk10 a reversal of motion is had.

Having thus described the invention, what is claimedv as new and soughtby Letters Patent, is

A tractor, including a wheel supported chassis, a motor secured on thechassis, a main drive shaft driven by the motor, gearing between thedrive shaft and the tractor wheels for driving the wheels from themotor, a bar pivotally secured to and extending rearwardly of thechassis, a steering post jonrnaled on the bar, steering gear between thepost and the chassis for swinging the chassis to either side withrespect to the rearwardly extending bar and post, control leverspivotally secured to the chassis, and means for retaining said levers intheir relative positions with respect to the rearwardly extending barduring the swinging movement of the chassis.

In testimony whereof I hereunto affix my signature.

Y NOAH A. KENNEDY.

